Display substrate, display panel, method for fabricating the same, display device

Abstract

A display substrate is disclosed, comprising a display area and a peripheral area surrounding the display area. The display substrate is fixed to a counter substrate in the peripheral area by a frame sealant. The display substrate comprises a substrate and a curing energy transmissive layer. A projection of the frame sealant on the substrate falls within or coincides with that of the curing energy transmissive layer. Since the curing energy transmissive layer transparent for the curing energy beam is provided in the display substrate, the frame sealant can be irradiated from the display substrate side through the curing energy transmissive layer, instead of from the counter substrate side. This improves the efficiency for curing the frame sealant. A display panel, a method for fabricating the display substrate and the display panel, and a display device are disclosed.

What is claimed is: 
     
       1. A display substrate, comprising a display area and a peripheral area surrounding the display area, the display substrate is fixed to a counter substrate in the peripheral area by a frame sealant, wherein
 the display substrate comprises a substrate and a curing energy transmissive layer which is arranged on the substrate, wherein the curing energy transmissive layer is transparent for a curing energy beam and opaque for visible light, 
 a projection of the frame sealant on the substrate falls within or coincides with a projection of the curing energy transmissive layer on the substrate, and 
 a material of the frame sealant is different from a material of the curing energy transmissive layer. 
 
     
     
       2. The display substrate of  claim 1 , wherein
 the display substrate further comprises a light shielding component which is arranged in the peripheral area of the substrate; and 
 a projection of the light shielding component on the substrate does not overlap the projection of the frame sealant on the substrate. 
 
     
     
       3. The display substrate of  claim 2 , wherein
 the light shielding component and the curing energy transmissive layer are arranged on a surface of the substrate facing the counter substrate. 
 
     
     
       4. The display substrate of  claim 2 , wherein
 the light shielding component is a light shielding frame. 
 
     
     
       5. The display substrate of  claim 2 , wherein
 the light shielding component is a black matrix. 
 
     
     
       6. The display substrate of  claim 5 , wherein
 the black matrix is provided with an opening part; and 
 the curing energy transmissive layer fills up the opening part. 
 
     
     
       7. The display substrate of  claim 1 , wherein
 the curing energy transmissive layer comprises a material which is transparent for one of UV light and infrared light. 
 
     
     
       8. The display substrate of  claim 1 , wherein
 the curing energy transmissive layer comprises a material which converts an incident energy beam into the curing energy beam. 
 
     
     
       9. The display substrate of  claim 8 , wherein
 the curing energy transmissive layer comprises a material which converts an incident energy beam into a long wavelength energy beam for curing the frame sealant. 
 
     
     
       10. The display substrate of  claim 8 , wherein
 the curing energy transmissive layer comprises a material which converts an incident energy beam into a short wavelength energy beam for curing the frame sealant. 
 
     
     
       11. A display panel, comprising:
 the display substrate of  claim 1 ; and 
 a counter substrate, wherein the counter substrate is assembled with the display substrate by the frame sealant. 
 
     
     
       12. The display panel of  claim 11 , wherein
 the display substrate further comprises a color filter layer which is arranged on the substrate. 
 
     
     
       13. The display panel of  claim 11 , wherein
 the counter substrate further comprises a thin film transistor layer and a color filter layer which is arranged on the thin film transistor layer. 
 
     
     
       14. A display device, comprising the display panel of  claim 11 . 
     
     
       15. A method for fabricating a display substrate, wherein the display substrate comprises a display area and a peripheral area and is fixed to a counter substrate in the peripheral area by a frame sealant, wherein the method comprises steps of:
 preparing a substrate; and 
 forming a curing energy transmissive layer in the peripheral area of the substrate, wherein the curing energy transmissive layer is transparent for a curing energy beam and opaque for visible light, wherein a projection of the frame sealant on the substrate falls within or coincides with a projection of the curing energy transmissive layer on the substrate, and a material of the frame sealant is different from a material of the curing energy transmissive layer. 
 
     
     
       16. The method of  claim 15 , wherein the step of forming the curing energy transmissive layer comprises:
 forming a black matrix on the substrate; 
 forming an opening part in the black matrix by a patterning process; 
 coating a dye in the opening part; and 
 drying the dye to form the curing energy transmissive layer. 
 
     
     
       17. The method of  claim 15 , wherein the step of forming the curing energy transmissive layer comprises:
 forming a black matrix on the substrate; 
 forming an opening part in the black matrix by a patterning process; and 
 forming the curing energy transmissive layer in the opening part by deposition. 
 
     
     
       18. A method for fabricating the display panel of  claim 11 , comprises steps of:
 forming a curing energy transmissive layer in the peripheral area of a substrate of the display substrate, wherein the curing energy transmissive layer is transparent for a curing energy beam and opaque for visible light; 
 coating a frame sealant on the display substrate or the counter substrate, wherein a projection of the frame sealant on the substrate falls within or coincides with a projection of the curing energy transmissive layer on the substrate; and 
 assembling the display substrate with the counter substrate and curing the frame sealant. 
 
     
     
       19. A display substrate, comprising a display area and a peripheral area surrounding the display area, the display substrate is fixed to a counter substrate in the peripheral area by a frame sealant, wherein
 the display substrate comprises a substrate and a curing energy transmissive layer which is arranged on the substrate, wherein the curing energy transmissive layer is transparent for a curing energy beam and opaque for visible light, and the curing energy transmissive layer is arranged across the peripheral area and defines the display area, 
 a projection of the frame sealant on the substrate falls within or coincides with a projection of the curing energy transmissive layer on the substrate, and 
 a material of the frame sealant is different from a material of the curing energy transmissive layer. 
 
     
     
       20. A display substrate, comprising a display area and a peripheral area surrounding the display area, the display substrate is fixed to a counter substrate in the peripheral area by a frame sealant, wherein
 the display substrate comprises a substrate, a curing energy transmissive layer and a color filter layer which are arranged on the substrate, wherein the curing energy transmissive layer is transparent for a curing energy beam and opaque for visible light, 
 a projection of the frame sealant on the substrate falls within a projection of the curing energy transmissive layer on the substrate, and area of the projection of the frame sealant on the substrate is smaller than area of the projection of the curing energy transmissive layer on the substrate, and
 the curing energy transmissive layer contacts the color filter layer directly.